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  • C07C233/68—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
  • C07C233/69—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom of an acyclic saturated carbon skeleton
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  • C07C233/68—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
  • C07C233/71—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom of an acyclic unsaturated carbon skeleton
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  • C07C233/78—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
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  • C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
  • C07C323/23—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton
  • C07C323/39—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton at least one of the nitrogen atoms being part of any of the groups, X being a hetero atom, Y being any atom
  • C07C323/40—Y being a hydrogen or a carbon atom
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  • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
  • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
  • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
  • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
  • C07D213/83—Thioacids; Thioesters; Thioamides; Thioimides
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  • C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
  • C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
  • C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
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  • C07C2603/58—Ring systems containing bridged rings containing three rings
  • C07C2603/70—Ring systems containing bridged rings containing three rings containing only six-membered rings
  • C07C2603/74—Adamantanes

Definitions

• the present invention relates to thioamide compounds or salts thereof, useful as preventive or therapeutic medicines for diseases accompanied by hyperactivated immune functions.
• Th1 type cells are known to produce mainly e.g. interleukin 2 (IL-2) and interferon ⁇ (IFN- ⁇ ) and to be concerned with cellular immunity such as protection against infection by e.g. virus and bacteria.
• Th2 type cells are known to produce mainly e.g.
• interleukin 4 interleukin 4
• IL-5 interleukin 5
• IL-6 interleukin 6
• IL-10 interleukin 10
• IL-13 interleukin 13
• Immune response of Th2 type induces or activates, due to its hyperactivation, allergic inflammation reactions such as immediate type allergy with which IgE antibody or mast cells are mainly concerned, and delayed-type allergy with which eosinophils are mainly concerned, and is deeply concerned with induction or deterioration of various allergic diseases such as urticaria, food allergy, anaphylactic shock, hypereosinophilic syndrome, asthma, allergic rhinitis, allergic conjunctivitis and atopic dermatitis. Further, abnormal hyperactivation of immune reaction of Th2 type is deeply concerned also with systemic autoimmune diseases in a pathophysiologic state where antibody production or humoral immunity is hyperactivated, such as systemic lupus erythematosus.
• immune response of Th1 type induces or activates cellular immune responses due to its hyperactivation, and is deeply concerned with induction or deterioration of organ specific autoimmune diseases such as chronic rheumatoid arthritis, type I diabetes, Hashimoto's thyroiditis, myasthenia gravis and multiple sclerosis. Further, cellular immune response of Th1 type is deeply concerned also with graft rejection accompanying organ transplantation. It is considered to be important to control immune response of Th1 type in order to prevent or treat such autoimmune diseases or graft rejection after transplantation.
• Patent document 1 discloses amide compounds effective as cytokine production inhibitors, which, however, include no thioamide compounds.
• Patent document 1 WO02/51397
• the present inventors have conducted extensive studies to find more excellent cytokine production inhibitors and, as a result, have found that specific thioamide compounds have cytokine production inhibitory effects, and the present invention has been accomplished on the basis of this discovery.
• the present invention relates to a thioamide compound represented by the formula (I) or a salt thereof:
• A is a nitrogen atom, N-oxide, C—NO 2 or C—CN;
• Hal is a halogen atom;
• M 1 is an alkyl group which may be substituted, an alkenyl group which may be substituted, an alkynyl group which may be substituted, a cycloalkyl group which may be substituted, a cycloalkenyl group which may be substituted, an aryl group which may be substituted, a heterocyclic group which may be substituted, an amino group which may be substituted, an oxygen atom, a sulfur atom, SO or SO 2 ;
• M 2 is an amino group which may be substituted, an oxygen atom, a sulfur atom or a single bond;
• R 1 is a halogen atom, a cyano group, a nitro group, an alkyl group which may be substituted, an alkoxy group which may be substituted, an alkylthio group which may be substituted, an amino group which may be substituted
• the compounds of the formula (I) suppress production of Th2 type cytokines, whereby they are useful as preventive or therapeutic medicines for various allergic diseases such as urticaria, food allergy, anaphylactic shock, hypereosinophilic syndrome, asthma, allergic rhinitis, allergic conjunctivitis and atopic dermatitis; and systemic autoimmune diseases in which antibody production or humoral immunity is hyperactivated, such as systemic lupus erythematosus.
• Th1 type cytokines suppress production of Th1 type cytokines, whereby they are useful as preventive or therapeutic medicines for organ specific autoimmune diseases such as chronic rheumatoid arthritis, type I diabetes, Hashimoto's thyroiditis, myasthenia gravis and multiple sclerosis; and graft rejection accompanying organ transplantation.
• the salt of the compound of the above formula (I) may be any pharmaceutically acceptable salt, and it may, for example, be a mineral acid salt such as a hydrochloride, a sulfate or a nitrate; an organic acid salt such as a p-toluenesulfonate, a propanesulfonate or a methanesulfonate; an alkali metal salt such as a potassium salt or a sodium salt; an alkaline earth metal salt such as a calcium salt; or an organic amine salt such as a triethanolamine salt or a tris(hydroxymethyl)aminomethane salt.
• a mineral acid salt such as a hydrochloride, a sulfate or a nitrate
• an organic acid salt such as a p-toluenesulfonate, a propanesulfonate or a methanesulfonate
• an alkali metal salt such as a potassium salt or a sodium salt
• Some of the compounds of the formula (I) or salts thereof have crystal water. Some of the compounds of the formula (I) or salts thereof have polymorphism.
• Each halogen atom in the formula (I) may be a fluorine atom, a chlorine atom, a bromine atom or an iodine atom.
• Each of the alkyl moiety which is included in the definition of the substituents in the formula (I), and the alkyl moiety in each of the secondary substituent and the tertiary substituent as described hereinafter, may be usually one having a carbon number of from 1 to 20, and it may, for example, be methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, decyl or nonadecyl, and they include linear or branched aliphatic structural isomers.
• Each of the alkenyl moiety which is included in the definition of the substitutents in the formula (I), and the alkenyl moiety in each of the secondary substituent and the tertiary substituent as described hereinafter, may be usually one having a carbon number of from 2 to 20, and it may, for example, be vinyl, propenyl, butenyl, pentenyl, hexenyl, decenyl or nonadecenyl, and they include linear or branched aliphatic structural isomers.
• Each of the alkynyl moiety which is included in the definition of the substituents in the formula (I), and the alkynyl moiety in each of the secondary substituent and the tertiary substituent as described hereinafter, may be usually one having a carbon number of from 2 to 20, and it may, for example, be ethynyl, propynyl, butynyl, pentynyl, hexynyl, decynyl or nonadecynyl, and they include linear or branched aliphatic structural isomers.
• Each of the cycloalkyl moiety which is included in the definition of the substituents in the formula (I), and the cycloalkyl moiety in each of the secondary substituent and the tertiary substituent as described hereinafter, may be usually one having a carbon number of from 3 to 10, and it may, for example, be a monocyclic group such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl or cyclooctyl; a fused polycyclic group; or a bridged polycyclic group such as adamantyl, noradamantyl, norbornanyl or norbornanonyl.
• Each of the cycloalkenyl moiety which is included in the definition of the substituents in the formula (I), and the cycloalkenyl moiety in each of the secondary substituent and the tertiary substituent as described hereinafter, may be usually one having a carbon number of from 3 to 10, and it may, for example, be a monocyclic group such as cyclopentenyl, cyclohexenyl or cyclooctenyl, a fused polycyclic group or a bridged polycyclic group.
• Each of the aryl moiety which is included in the definition of the substituents in the formula (I), and the aryl moiety in each of the secondary substituent and the tertiary substituent as described hereinafter, may be a fused polycyclic group such as naphthyl, as well as phenyl.
• Each of the heterocyclic moiety which is included in the definition of the substituents in the formula (I), and the heterocyclic moiety in each of the secondary substituent and the tertiary substituent as described hereinafter, may, for example, be a five-membered monocyclic heterocyclic group such as pyrrolyl, pyrrolinyl, pyrrolidinyl, furanyl, dihydrofuranyl, tetrahydrofuranyl, thienyl, dihydrothienyl, tetrahydrothienyl, pyrazolyl, pyrazolinyl, pyrazolidinyl, imidazolyl, imidazolinyl, imidazolidinyl, oxazolyl, oxazolinyl, oxazolidinyl, isoxazolyl, isoxazolinyl, isoxazolidinyl, thiazolyl, thiazolinyl, thiazo
• each of the alkyl group which may be substituted, the alkenyl group which may be substituted and the alkynyl group which may be substituted may, for example, be halogen, hydroxyl, mercapto, alkoxy, alkylthio, alkenyloxy, alkenylthio, alkynyloxy, alkynylthio, cycloalkyl, cycloalkenyl, cycloalkoxy, cycloalkylthio, cycloalkenyloxy, cycloalkenylthio, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, alkenyloxycarbonyl, alkenylcarbonyl, alkenylcarbonyl, alkenylcarbonyloxy, alkynyloxycarbonyl, alkynylcarbonyl, alkynylcarbonyloxy, cycloalkoxycarbonyl, cycloalkylcarbonyl, cycloalky
• each of the cycloalkyl group which may be substituted, the cycloalkenyl group which may be substituted, the aryl group which may be substituted and the heterocyclic group which may be substituted may, for example, be halogen, hydroxyl, mercapto, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkenyloxy, alkenylthio, alkynyloxy, alkynylthio, cycloalkyl, cycloalkenyl, cycloalkoxy, cycloalkylthio, cycloalkenyloxy, cycloalkenylthio, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, alkenyloxycarbonyl, alkenylcarbonyl, alkenylcarbonyloxy, alkynyloxycarbonyl, alkynylcarbonyl, alkynylcarbonyl, alkyny
• the secondary substituent of the amino group which may be substituted may, for example, be hydroxyl, alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, cycloalkyl, cycloalkenyl, cycloalkoxy, cycloalkenyloxy, alkoxycarbonyl, alkylcarbonyl, alkenyloxycarbonyl, alkenylcarbonyl, alkynyloxycarbonyl, alkynylcarbonyl, cycloalkoxycarbonyl, cycloalkylcarbonyl, cycloalkenyloxycarbonyl, cycloalkenylcarbonyl, aryl, aryloxy, aryloxycarbonyl, arylcarbonyl, heterocyclyl, heterocyclyloxy, heterocyclyloxycarbonyl, heterocyclylcarbonyl, aminocarbonyl, alkyl, alkenyl, alkynyl, alkoxy
• Each of the substituent except halogen, hydroxyl, mercapto, cyano, nitro and carboxyl among the above secondary substituents may further be substituted with tertiary substituents such as halogen, hydroxyl, mercapto, cyano, nitro, carboxyl, amino, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, heterocyclyl, alkoxy, alkenyloxy, alkynyloxy, cycloalkyloxy, cycloalkenyloxy, aryloxy, heterocyclyloxy, alkylthio, alkenylthio, alkynylthio, cycloalkylthio, cycloalkenylthio, arylthio, heterocyclylthio, alkylsulfonyl, alkenylsulfonyl, alkynylsulfonyl, cycloalkyl
• the number of such tertiary substituents may be one or two or more, and when the number is two or more, such substituents may be the same or different. Further, when the secondary substituent is an amino group substituted with two tertiary substituents, such tertiary substituents together may form a ring containing or not containing a heteroatom.
• the compounds of the formula (I) or salts thereof can have stereoisomers such as geometric isomers and optical isomers, and the present invention covers these isomers and mixtures thereof.
• the compounds of the formula (I) and salts thereof can be produced by the following methods.
• a method comprising reacting a compound represented by the formula (II):
• the leaving group represented above as L may be a halogen atom, an alkoxy group or the like.
• the reaction of the Preparation Method 1 may be carried out in the presence of a proper solvent.
• the specific solvent used may, for example, be an aromatic hydrocarbon such as benzene, toluene or xylene; an aliphatic hydrocarbon such as pentane, hexane, heptane, petroleum ether, ligroin or petroleum benzine; an ether such as diethyl ether, dipropyl ether, dibutyl ether, tetrahydrofuran or dioxane; a nitrile such as acetonitrile or propionitrile; an acid amide such as dimethylformamide or dimethylacetamide; a sulfoxide such as dimethyl sulfoxide; a sulfone such as sulfolane; a phosphate amide such as hexamethylphosphoramide; or a halogenated hydrocarbon such as chloroform, dichloromethane, carbon tetrachlor
• the reaction is carried out preferably in the presence of a base in some cases.
• the specific base used may, for example, be an organic base such as triethylamine, pyridine, N-methylmorpholine, 1,8-diazabicyclo[5.4.0]-7-undecene or N,N-dimethylaniline; an alkali metal such as lithium, sodium or potassium; an alkali metal carbonate such as lithium carbonate, sodium carbonate or potassium carbonate; an alkali metal hydrogencarbonate such as lithium hydrogencarbonate, sodium hydrogencarbonate or potassium hydrogencarbonate; an alkali metal hydride such as lithium hydride, sodium hydride or potassium hydride; or n-butylithium, lithium diisopropylamide or sodium amide.
• the reaction of the Preparation Method 1 is carried out usually at a reaction temperature of from ⁇ 70 to 150° C., preferably at a reaction temperature of from ⁇ 10 to 100° C.
• the reaction time is usually from 0.1 to 48 hours.
• the compound of the formula (III) may be used in an amount of from 0.8 to 2 equivalents, preferably from 1 to 1.5 equivalents, per 1 mol of the compound of the above formula (II).
• reaction conditions may optionally be combined with one another. Further, such various reaction conditions include reaction conditions in a usual range and reaction conditions in a preferred range, and they may also be optionally selected and combined with one another.
• a method comprising reacting a compound represented by the formula (IV):
• the thiocarbonylating agent to be used in the reaction in the Preparation Method 2 is the Lawson reagent, diphosphorus pentasulfide or the like.
• the reaction of the Preparation Method 2 may be carried out in the presence of a proper solvent.
• the specific solvent used may, for example, be an aromatic hydrocarbon such as benzene, toluene or xylene; an aliphatic hydrocarbon such as pentane, hexane, heptane, petroleum ether, ligroin or petroleum benzine; an ether such as diethyl ether, dipropyl ether, dibutyl ether, tetrahydrofuran or dioxane; or carbon disulfide, or a mixed solvent thereof.
• the reaction of the Preparation Method 2 is carried out usually at a reaction temperature of from ⁇ 20 to 150° C., preferably at a reaction temperature of from 0 to 110° C.
• the reaction time is usually from 0.1 to 48 hours.
• the thiocarbonylating agent may be used in an amount of from 0.4 to 2 equivalents, per 1 mol of the compound of the above formula (IV).
• reaction conditions may optionally be combined with one another. Further, such various reaction conditions include reaction conditions in a usual range and reaction conditions in a preferred range, and they may also be optionally selected and combined with one another.
• the compound of the formula (IV) or a salt thereof can be produced by reacting a compound of the formula (V):
• the compounds of the above formula (I) obtained by each of the above Preparation Methods 1 and 2 and methods in accordance therewith, may be isolated and purified by means of a known method such as concentration, concentration under reduced pressure, distillation, fractional distillation, redistribution, solvent extraction, crystallization, recrystallization or chromatography.
• a salt may be formed by a conventional method.
• the compound of the above formula (I) or a salt thereof or a stereoisomer thereof has a cytokine production inhibitory effect by itself or as mixed.
• the present invention provides a cytokine production inhibitor useful as a preventive or therapeutic medicine for diseases accompanied by hyperactivated immune functions.
• X is SO 2 or CO; A is a nitrogen atom, N-oxide, C—NO 2 or C—CN; Hal is a halogen atom; M 1 is an alkyl group which may be substituted, an alkenyl group which may be substituted, an alkynyl group which may be substituted, a cycloalkyl group which may be substituted, a cycloalkenyl group which may be substituted, an aryl group which may be substituted, a heterocyclic group which may be substituted, an amino group which may be substituted, an oxygen atom, a sulfur atom, SO or SO 2 ; M 2 is an amino group which may be substituted, an oxygen atom, a sulfur atom or a single bond; R 1 is a halogen atom, a cyano group, a nitro group, an alkyl group which may be substituted, an alkoxy group which may be substituted, an alkylthio group which may be substituted, an amino group which may be
• M 1 is an alkyl group
• Cy is a cycloalkyl group, a cycloalkenyl group, an aryl group or a heterocyclic group (except for an indolyl group, an adamantyl group, a 3-pyridyl group, a 4-pyridyl group, a tetrahydro-2-furanyl group, a 2-furanyl group and a 1,3-benzodioxolyl-5-yl group), and k is 0.
• the compounds of the above formulae (I) and (VI) or salts thereof are compounds which exhibit cytokine production inhibitory activity, and are useful as preventive or therapeutic medicines for diseases accompanied by hyperactivated immune functions as listed below.
• At least one type of allergic diseases selected from urticaria, food allergy, anaphylactic shock, hypereosinophilic syndrome, asthma, allergic rhinitis, allergic conjunctivitis and atopic dermatitis.
• At least one type of organ specific autoimmune diseases selected from chronic rheumatoid arthritis, type I diabetes, Hashimoto's thyroiditis, myasthenia gravis and multiple sclerosis.
• the compounds of the formula (I) are usually used in the form of a common pharmaceutical preparation (such as a method as defined in the Japanese Pharmacopoeia Twelfth Edition).
• the pharmaceutical preparation is prepared by using a commonly used diluent or excipient such as a bulking agent, an extender, a binding agent, a moisture-imparting agent, a disintegrator, a surfactant or a lubricant.
• various forms may be selected depending upon the purpose of treatment, and a tablet, a pill, a powder, a dust, a granule, a capsule, a suppository, a solution, a suspension, an emulsion, an injection (such as a solution or a suspension), a spray, an aerosol, a cream, an ointment, a lotion or a transdermal agent (a patch, a matrix or a tape) may be mentioned as examples.
• carriers which have conventionally been known in this field can be used widely, and they may, for example, be excipients such as lactose, sucrose, sodium chloride, glucose, urea, starch, calcium carbonate, kaolin, crystalline cellulose and silicic acid; binding agents such as water, ethanol, propanol, simple syrup, a glucose solution, a starch solution, a gelatin solution, carboxymethyl cellulose, Shellac, methyl cellulose, potassium phosphate and polyvinyl pyrrolidone; disintegrators such as dried starch, sodium alginate, an agar powder, a laminaran powder, sodium hydrogencarbonate, calcium carbonate, polyoxyethylene sorbitan fatty acid esters, sodium lauryl sulfate, monoglyceryl stearate, starch and lactose; disintegration inhibitors such as sucrose, stearin, cacao butter and hydrogenated oil; absorption enhancers such as a quaternary
• a tablet may be a tablet having a common coating applied thereto as the case requires, such as a sugar-coated tablet, a gelatin-coated tablet, an enteric-coated tablet or a film-coated tablet, or a double tablet or a multilayer tablet.
• carriers which have conventionally been known in this field can be used widely, and they may, for example, be excipients such as glucose, lactose, starch, cacao butter, hydrogenated vegetable oil, kaolin and talc; binding agents such as powdered acacia, powdered tragacanth, gelatin and ethanol and disintegrators such as laminaran agar.
• conventionally known carriers can be used widely, and they may, for example, be polyethylene glycol, cacao butter, higher alcohols, higher alcohol esters, gelatin and semi-synthetic glyceride.
• a solution, an emulsion or a suspension is sterilized, and is preferably isotonic with the blood, and to form the medicine into a solution, an emulsion or a suspension
• all the diluents which are commonly used in this field can be used, and they may, for example, be water, a lactic acid aqueous solution, ethyl alcohol, propylene glycol, ethoxylated isostearyl alcohol, polyoxylated isostearyl alcohol and polyoxyethylene sorbitan fatty acid esters.
• sodium chloride salt, glucose or glycerin in an amount adequate to prepare an isotonic solution may be incorporated in the pharmaceutical preparation, and a common solubilizing agent, buffer, soothing agent or the like may be added thereto.
• a colorant, a preservative, a fragrant material, a flavoring agent, a sweetening agent or another pharmaceutical agent may be incorporated in the pharmaceutical preparation.
• the amount of the compound of the formula (I) is not particularly limited and may optionally be selected from a wide range, but it is usually from 1 to 70 wt %, preferably from 5 to 50 wt % in the entire composition.
• the administration method of the compounds of the formula (I) is not particularly limited, and they are orally or parenterally administered by a method depending upon the form of the preparation, the age, the sex or other conditions of the patient and the degree of the disease.
• a tablet, a pill, a solution, a suspension, an emulsion, a granule or a capsule may, for example, be mentioned as a preferred form.
• the medicine may be administered in the form of e.g. a topical agent, an injection, a transdermal agent, nasal drops, an inhalant or a suppository.
• the medicine is intravenously administered by itself or as mixed with a conventional fluid replacement such as glucose or amino acids, or as the case requires, it is intramuscularly, intracutaneously, subcutaneously or intraperitoneally administered by itself. Further, in the case of a suppository, it is preferred that the medicine is administered in rectum.
• the dose of the compound of the formula (I) is optionally selected depending upon e.g. the direction for use, the age, the sex or other conditions of the patient and the degree of disease, and usually the amount of the compound of the above formula (I) as an active ingredient is preferably from about 0.05 to about 50 mg per kg of the body weight per day, and the medicine may be administered once or several times a day. Further, it is preferred that the active ingredient is contained in an amount of from 1 to 1,000 mg in the administration unit form.
• Murine spleen cells were treated with anti-mouse CD3 antibody and IL-2 to induce cytokine production.
• the test compounds were added to the cytokine production system to evaluate their inhibitory effect. Namely, anti-mouse CD3 antibody adjusted to from 10 to 20 ⁇ g/ml with borate buffered physiological saline (pH 8.5) was pipetted into a 96-well cell culture plate in an amount of 50 ⁇ l/well and left to stand at 4° C. for 18 hours.
• the unreacted solution was removed, washing with Hank's buffer solution was carried out once, and IL-2 adjusted to 10 ng/ml with a RPMI liquid containing 10% fetal bovine serum (FCS) was pipetted in an amount of 50 ⁇ l/well.
• FCS fetal bovine serum
• a solution alone without anti-CD3 antibody nor IL-2 was applied.
• the diluted solution of each of the test compounds (concentration: 10 ppm) was pipetted in an amount of 50 ⁇ l/well, and a cell suspension of 1 ⁇ 10 7 cells/ml, prepared from spleen of Balb/c mice (female, 7 to 10 week old) was pipetted thereinto in an amount of 100 ⁇ l/well.
• an incubator 37° C., 5% carbon dioxide gas
• the culture supernatant was recovered to measure the cytokine production amount by ELISA method.
• IL-5 interleukin 5
• rat anti-mouse IL-5 antibody Endogen Code No. MM-550C
• carbonate buffer solution pH 9.5
• IWAKI Code No. 3860-096
• the plate was subjected to blocking at 37° C. for 2 hours by phosphate buffered physiological saline containing 10% FCS (pH 7.2) (blocking buffer solution) (250 ⁇ l/well).
• the plate was washed with PBS (washing buffer) containing 0.05% Tween 20 (Nacalai Tesque, Code No. 281-51) four times, and a diluted liquid of the culture supernatant was spread in an amount of 50 ⁇ l/well, followed by incubation at room temperature for 1 hour.
• PBS washing buffer
• Tween 20 Nacalai Tesque, Code No. 281-51
• a diluted liquid of the culture supernatant was spread in an amount of 50 ⁇ l/well, followed by incubation at room temperature for 1 hour.
• recombinant mouse IL-5 R&D systems, Code No. 405-ML
• the plate was washed with a washing buffer four times, and biotin-labeled rat anti-mouse IL-5 antibody (Pharmingen, Code No.
• T-8665) was added thereto in an amount of 100 ⁇ l/well for color developing for from 10 to 20 minutes.
• T average value of the test compound group
• N average value of the negative control group
• P average value of the positive control group
• BALB/c mice purchased from Japan SLC, Inc., male, 5 to 8-week old are intraperitoneally (or subcutaneously) immunized with 2 mg of an alum adjuvant (aluminum potassium sulfate, manufactured by Nacalai Tesque, No. 017-27) and 2 ⁇ g/mouse of an ovalbumin (OVA) preparation (manufactured by SIGMA, No. A-5503) and, 10 to 14 days later, immunized again intraperitoneally (or subcutaneously) with OVA 1 ⁇ g/alum 2 mg.
• an alum adjuvant aluminum potassium sulfate, manufactured by Nacalai Tesque, No. 017-27
• OVA ovalbumin
• mice Four days after the second immunization, 0.2 ml of 5 ⁇ g/ml OVA in physiological saline is injected into the mouse abdominal cavities to induce cytokine production and eosinophilic infiltration. After another six hours, the mice are euthanized with carbon dioxide gas, and 2 ml of 0.01 M phosphate buffered physiological saline (PBS) pH 7.2 is injected into the abdominal cavities, and after thorough abdominal massage, the abdominal perfusates are recovered. The recovered abdominal perfusates are centrifuged in a miniature cooling centrifuge at 10,000 rpm at 4° C. for 10 minutes. The supernatants are recovered and refrigerated at ⁇ 80° C. until measurements.
• PBS phosphate buffered physiological saline
• the IL-5 and INF- ⁇ concentrations are measured by ELISA in the same manners as in Test Examples 1 and 2.
• the test compounds are administered subcutaneously or orally 1 hour before the last induction by intraperitoneal injection of OVA.
• the efficacy is expressed as an inhibitory ratio (%) based on the control solvent. As a result, the compounds of the present invention turn out to have efficacy.
• Test Example 3 The procedure in Test Example 3 is followed to recover the abdominal perfusates 24 hours after the last induction by OVA, and refrigerated at ⁇ 80° C. until measurements.
• the eusinophil counts in the abdominal perfusates are determined by the eosinophil peroxidase (EPO) assay of Strath et al., Journal of Immunological Methods, Vol. 83, pp. 209-215, 1985, with some modifications.
• EPO eosinophil peroxidase
• 0.1 mL of 0.05 M Tris-HCL (pH 8.0) containing 3 mM o-phenylenediamine, 0.1% TritonX-100 and 8.8 mM hydrogen peroxide as a substrate buffer is mixed with 0.05 mL of a test liquid diluted with PBS, and after 30 minutes of reaction at room temperature, 0.05 mL of 4 M sulfuric acid solution is added to terminate the enzymatic reaction.
• the absorption Al at a measurement wavelength of 492 nm is measured with a microplate reader.
• the same procedure is done with a substrate buffer further containing 10 mM 3-amino-1,2,4-triazol (AMT) as an EPO inhibitor, and the absorption A2 is measured.
• AMT 3-amino-1,2,4-triazol
• the absorption (A1-A2) attributable to eosinophils is calculated.
• the test compounds are administered subcutaneously or orally 1 hour before the last induction by intraperitoneal injection of OVA.
• the efficacy is expressed as an inhibitory ratio (%) based on the control solvent. As a result, the compounds of the present invention turn out to have efficacy.

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